Hybrid/oxygen Sensor

[LexusGs450H]

Hi Dear Lexus enthusiasts

I am new to hybrids, recently got my first hybrid, Gs450h, very happy with it, but still trying to get used.

Appreciate any advice regarding hybrids.

On my GS I got faulty oxygen lambda sensor, all ready ordered a new one and looking to replace it any day now, appriciate any advice regarding replacement.

and please if somebody could advice how does faulty oxygen sensor effect hybrid system???

Thank you

[ColinBarber]

An O2 sensor can fail in a variety of ways, some affecting the petrol engine more than others. Typically it will slightly affect the efficiency of the engine. Replacement is normally easy, you just need to have the correct split socket, especially designed for an O2 sensor, and use the anti-seize compound that comes with the new sensor on the thread so it can be removed in the future.

[LexusGs450H]

Thank you, ColinBarber

Do you know if faulty oxygen sensor could effect work of hybrid?

For example can "check hybrid system" sign come up because of that???

Please let me know

Thank you

[ColinBarber]

To my knowledge no it wouldn't. You should only get a check engine light as a result of an O2 sensor faulty however I've seen other engine only issues cause a hybrid warning so I cannot rule out the possibility completely. You really need to get the error code(s) to fully understand and if you have a flat or weak aux Battery (standard 12v car battery) you can get all sorts of spurious errors which just need to be cleared.